public class Item {
	public int value;
	public Item next;
	public Item prev;
	Item()
	{
		this.value = 0;
		this.next = null;
		this.prev = null;
	}
	Item (int value)
	{
		this.value = value;
	}
	Item (int value, Item nextItem,Item prevItem)
	{
		this.value = value;
		this.next = nextItem;
		this.prev = prevItem;
	}
}

